ORLANDO, Fla., April 2 /PRNewswire-FirstCall/ -- AirTran Airways, a subsidiary of AirTran Holdings, Inc. (NYSE: AAI - News), today announced that it will begin offering seasonal service between Atlanta and the following destinations: Portland, Maine, and Harrisburg, Pa. The carrier will operate one daily nonstop flight to and from each city between June 11 and September 8. Both cities are new destinations from Atlanta for the low-fare airline. The route will be served by AirTran Airways' popular Boeing 717-200 aircraft, which seats 117 passengers (12 in Business Class and 105 in coach).